Molding apparatus.



Patented Jan. 14, 1919.

3 SHEETS-SHEET l.

Ik dZ/z/ Z211 B. A. NELSON.

MOLDING APPARATUS. APPLICATION man JULY 2. i911. 1,291,607.

N 11 la Urli B. A. NELSON.

MOLDING APPARATUS.

APPLlcAUoN FILED 1u|.Y 2. 1911.

Patented J an. 14, 1919.

3 SHEETS-SHEET 2.

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B. A. NELSON.

MOLDING APPARATUS.

xPPLlcATmN man JULY 2, 1917.

1,291,607. Patented Jan. 14, 1919.

3 SHEETS-SHEET 3.

BROR A. NELSON, OF CHICAGO, ILLINOIS.

MOLDING APPARATUS.

Specification of Letters Patent.

Patented J an. 14, 1919.

Application led July 2, 1917. Serial No. 178.130.

To all 'whom t may concern.'

Be it known that I, Brion A. NELSON, a citizen of the United States, anda resident of the city of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful Improvements in MoldingApparatus, of which the following is a speciiication.

My invention relates to an improved molding apparatus, and has for itsobject tlie provision of an improved molding apparatus by means of whichsimple elongated articles, such as window sash weights, mayT be moldedin great quantities and with great expedition and economy.

The invention consists in the method and apparatus hereinafter describedand claimed.

The invention Will be Ibest understood by reference to the accompanyingdrawings, forming a part of this specification, and in which,

Figure l is a partial horizontal section of a molding flask employed inthe invention,

Fig. 2, an end view of the same,

Fig. 3, a section taken on line 3-3 of Fi 2 Figfl, a side view of theflask,

Fig. 5, a detail view of an individual pattern employed in carrying onthe invention, 6, a section taken on line 6-6 of Fig. 1,

Fig. 7, a plan view of a follow board pattern employed in the invention,

Fig. 8, a section taken on line 8--8 of Fig. 7, and U Fig. 9, a sectiontaken on line 9-9 of Fig..7.

The preferred form'of construction for carrying on my invention, asillustrated in the drawings, comprises a suitable molding flask made upof vertical side members l0 and end members. 11, consisting of a plurality of transverse strips or slats as indicated, said end membersbeing adjustably secured between said side members by means of a frame12 secured in place by means of bolts 13 taking through sets 'of boltholes 14 by means of which the length of the flask may be varied asdesired. A smooth bottom member 15, supported on legs 16, is alsoprovided for the flask.

Coperating with the molding flask is a pattern in the form of a. followboard 17, having a plurality of partial individual pat- 18, the outerends of the terns 18 thereon, said partial patterns 18 consisting ofpatterns for the halves of ordinary sash weights. The individualpatterns 18 are arranged in oppositely disposed sets, staggered withrelation to each other and provided at their outer ends with outwardlyflaring enlargements 19, as indicated. At the inner ends the individualpatterns 18 are gated together by means of a central gate 20 havingindividual leads 21 connecting with the individual patterns gate 20being provided with outwardly flaring portions 22 as indicated. Acentral gate perforation 23 is provided for the reception of a verticalcentral gate member 24 arranged to rest at its bottom in a socket member24: of ordinary core material.

Coperating with the follow board pattern 17 are a plurality ofindividual separate sash weight patterns 25, each provided with aremovable culi' or enlargement 26 adapted to fit the imprint formed bythe enlargements 19 on pattern 18. Individual gate patterns 27 are alsoprovided to be set in the imprints formed by the gate pattern 20 of thefollow board pattern 17, said individual gate patterns being providedwith outwardly flaring enlargements 28 at their outer ends and withextensions or projections 29, as indicated, said projections 29 beingadapted to project through suitable openings in the side members 10,said openings being provided with closure plates 30, operating betweendovetail lugs 31, as shown. The uppermost opening is provided with alaterally movable closure plate 30', operating between dovetail lugs 31as shown to facilitate removal thereof. Suitable openings are alsoprovided in the end walls 11 closable by removable closure plates 32,operating through dovetail lugs 33, as shown.

In use, a layer of sand is placed in the flask up to the level of therst set of openings in the side and end walls, and an imprint made insaid sand by means of the follow board pattern 17, the vertical gatemember 24 having previously been placed in position and the follow board17 passed downwardly thereover. Suiiicient sand should be placed in theflask to cause the imprint thus formed to come to a level with theopenings in the side and end walls, so that the imprints Will registerwith said openings.

Then the follow board is removed and said partial individual sash weightpatterns and individual gate patterns 27 are placed in the imprints thusformed. Then a new layer of sand is sifted into the flask and compressedabout the individual patterns therein, the new layer of sand bringingthe level of the flask up to the level of the next set of holes in thesides and ends of the flask. rlhen the process is repeated, the followboard 17, however, being reversed in position so as to cause theimprints formed to stagger with the patterns in the layer below, and anew set of individual patterns thus placed in the flask. The process isthus repeated, reversing the follow board pattern 17 at each step untilthe entire flask is built up with a plurality of layers of individualpatterns therein, and a vertical gate extending Ithrough the flask. Thenthe individual patterns are removed through the openings in the side andendI walls provided for this purpose, the removable cutis 26 on thepatterns 25 and the projections 25 and 29 facilitating such removal. Atthis time also the vertical gate pattern 24 is also removed. |lhen theouter ends of the spaces left by the removal of the patterns are pluggedwith core members 34: and 35, the core members 34e simply closing theouter ends of the gate channels and the core members 35 being themselvescored out, as indicated, to form the eyes on the ends of the sashweights. The closure plates 30, 30 and 32 are then placed in positionwhen vthe flask is ready for pouring. rlhe metal is poured into the gatechannel left by the removal of the gate member .24 and flows freely andreadily out through all of the individual sash weight molds or spaces,thus forming a large number of sash weights at each pouring operationand greatly expediting and economizing the production. l

While l have illustrated and described the preferred method andapparatus for carrying my invention into effect, these are capable ofvariation and modiiication without departingl from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails set forth, but desire to avail myself of such variations andmodifications as come within the scope of the appended claims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof partial patterns thereon; and individual patterns corresponding withpatterns, substantially as described.

2. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof partial patterns thereon, said partial patterns being arranged inoppositely disposed staggered sets gated together at the center; andindividual patterns corresponding to said partial patterns,substantially as described.

3. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof' partial patterns thereon, there being a central gate perforation insaid follow board; and individual patterns corresponding to said partialpatterns, substantially as described.

il. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof partial patterns thereon, said partial patterns being arranged inoppositely disposed staggered sets gated together at the center, therebeing a central gate perforation in said follow board; and individualpatterns corresponding with said partial patterns, substantially asdescribed.

5. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said ask and hav ing a pluralityof partial patterns thereon; and individual patterns corresponding withsaid partial patterns, and having removable culi's or enlargements attheir outer ends, there being suitable openings in said flask to permitof the removal of said individual patterns and ends, substantially asdescribed.

6. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof partial*patterns-thereon, said partial patterns being arranged inoppositely disposed staggered sets gated together at the center; andindividual patterns corresponding to said partial patterns, 'and havingremovable cuiis or enlargements at their outer ends, there beingsuitable openings in said flask to permit of the removal of saidindividual patterns and cuffs, substantially as described.

7. A molding apparatus comprising a flask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof partial ypatterns thereon,

'there being a central gate perforation in said follow board; andindividual patterns corresponding to said partial patterns, and havingremovable cuffs or enlargements at their ,120 outer ends, there beingsuitable openings in said flask to permit of the removal of saidindividual patterns and cuffs, substantially as described. y

8. A molding apparatus comprising a ask; a pattern consisting of afollow board adapted to be inserted in said flask and having a pluralityof partial patterns thereon, said partial patterns being arranged inoppositely disposed staggered sets gated together at the center, therebeing a central gate perforation in said follow board; and individualpatterns corresponding with said partial patterns, and having removablecuffs or enlargements at their outer ends, there being suitable openingsin said iiask to permit of the removal of said individual patterns andcuffs, substantially as described.

9. A molding apparatus comprising a flask having centrally perforatedsides and ends adjustable between said sides, said ends being alsoprovided with sets of perforations; a follow board adapted to beinserted within said flask and having a plurality of partial patternsthereon; removable plates arranged on said sides and ends to close saidopenings; and individual patterns corresponding to said partialpatterns, substantially as described.

10. A molding apparatus comprising a flask consisting of centrallyperforated sides and ends adjustable between said sides, said ends beingprovided with sets of perforations; a pattern consisting of a followboard adapted to be inserted in said flask and having a plurality ofpartial patterns thereon, said partial patterns being arranged inoppositely disposed staggered sets gated together at the center, therebeing a central gate perforation in said follow board; removable plateson said sides and ends for closing the openings therein; individualpatterns corresponding to said partial patterns; gate patternscorresponding to the partial gates; and a vertical gate patterncorresponding with the perforation in said follow board, substantiallyas described.

In testimony whereof I have signed my name to this specication in thepresence of two subscribing witnesses.

BROR A. NELSON.

Witnesses:

ARTHUR A. OLSON, B. G. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner o! Patenti, Washington, D. 0.

